<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>55计算属性setter和getter</title>
  <script src="./vue.js"></script>
</head>
<body>
  <div id="root">
    {{fullName}}
    {{age}}
  </div>
  <script>
    var vm = new Vue({
      el: '#root',
      data: {
        firstName: "claire",
        lastName: "Zhang",
        age: 28
      },
     
      // 计算属性，依赖的2个值没有改变，只计算一次，有缓存在里面
      computed: {
        fullName: {
           get: function() {
              return this.firstName + " " + this.lastName;
           }, 
           set: function(value) {
              var arr = value.split(" ");
              this.firstName = arr[0];
              this.lastName = arr[1];
           }
        }
      }

    })
  </script>
</body>
</html>